PU418 Polyurethane Intermediate Coat is a polyurethane coating used as an intermediate coat. A high-film, high-performance intermediate or matt coating for protecting steel or concrete in corrosive environments, such as special steel structures and construction machinery. A two-pack polyurethane coating, available as MIO intermediate coat, iron red intermediate coat or other colours, fast-curing at low temperature, with a film resistant to salt spray and moderate acids, alkalis, salts and solvents. Parameters on this page: dry film thickness 50–100 µm; theoretical spreading rate 5.88 m²/kg; number of components: two.
Source: OSAKA original technical data sheet (TDS) 'PU418 Polyurethane Intermediate Coat'. Spreading rate and other values converted from the TDS; for reference only.
The above content is compiled from the manufacturer's datasheet and this site's parameter tables. For selection, coating systems and lead times, pleaseContact Usfor confirmation.
This page carries the full TDS for this product, translated from the manufacturer's original document. No file download is needed; for an original-language copy, send an enquiry.
| Volume Solids | 64% |
|---|---|
| Dry Film Thickness | 50–100 µm |
| Theoretical Spreading Rate | 5.88 m²/kg |
| VOC | 310 g/L |
| Density / Specific Gravity | 1.36 kg/L |
| Number of Components | Two-component |
| Flash Point | >23 °C (components A, B and their mixture) |
| Thinner | OUP 104, recommended addition 3%–5% |
| Mixing Ratio | MIO intermediate coat, A : B = 5:1 (by weight) |
A two-pack polyurethane coating, available as MIO intermediate coat, iron red intermediate coat or other colours, fast-curing at low temperature, with a film resistant to salt spray and moderate acids, alkalis, salts and solvents.
A high-film, high-performance intermediate or matt coating for protecting steel or concrete in corrosive environments, such as special steel structures and construction machinery.
| Volume Solids | 64% |
|---|---|
| Dry Film Thickness | 50–100 µm |
| Theoretical Spreading Rate | 5.88 m²/kg (at 80 µm dry film thickness) |
| Practical Spreading Rate | Allowing a suitable loss |
| Volatile organic compound content | 310 g/L |
| Mixing Ratio | MIO intermediate coat, A : B = 5:1 (by weight); other colours, A : B = 6:1 (by weight) |
|---|---|
| Airless spray | Recommended: nozzle tip size 0.43–0.53 mm; fluid pressure ≥17.6 MPa |
| Brush or roller | Recommended |
| Conventional spray | Suitable, but not recommended. |
| Thinner | OUP 104, recommended addition 3%–5%. |
| Paint equipment cleaner | OUP 104 |
| Pot life | 23 °C: 4 h |
| Drying Time | ||||
| Substrate Temperature | Touch dry (h) | Hard dry (h) | Recoat Interval | |
| Minimum | Maximum | |||
| 5°C | 2 | 36 | 36 h | Unlimited |
| 23°C | 1 | 16 | 16 h | Unlimited |
| 35°C | 0.5 | 12 | 12 h | Unlimited |
| Storage | In a dry, cool environment away from fire and heat sources. |
|---|---|
| Shelf life | Component A: 1 year; Component B: 6 months |
| Packaging Specifications | MIO intermediate coat: A 20 kg in a 20 L container; B 4 kg in a 4 L container. Other colours: A 18 kg in a 20 L container; B 3 kg in a 4 L container |
| Flash Point | >23 °C (components A, B and their mixture) |
| density | 1.36 kg/L |
For application over primed surfaces; keep the surface clean, dry and free of oil/grease. Previous compatible coats: epoxy, polyurethane and other primers or intermediate coats; can be applied over unsaturated polyester putty without difficulty. Subsequent compatible coats: polyurethane topcoat, acrylic topcoat, etc.
Mix freshly in the specified ratio and use within the pot life to avoid gelling and waste. During storage and application, avoid contact with moisture.
Information is subject to the manufacturer's latest version; the manufacturer's latest TDS prevails.
The technical parameters on this page are taken from the product's original manufacturer technical datasheet, the copyright of which belongs to the manufacturer. If a rights holder considers the presentation inappropriate, contact us for verification and handling.
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
Packaging specifications and batch lead times are subject to actual availability. PleaseContact Uscontact us for project-based calculation.
